public class lc1356根据数字二进制下1数目排序 {

    public static void main(String[] args) {
        int[] arr = {0,1,2,3,4};
//        arr = sortByBits(arr);
        System.out.println(arr.toString());

    }

    public static int[] sortByBits(int arr[]){
        return null;
    }

    public static char[] toBinary(int num){
        return null;
    }

    public static int[] sortBy1Count(){
        return null;
    }

}
